CVE-2026-0729: Intern Membership Management SQLi Flaw

CVE-2026-0729 Overview

CVE-2026-0729 is a SQL Injection vulnerability discovered in code-projects Intern Membership Management System version 1.0. The vulnerability exists in the /intern/admin/add_activity.php file, where the Title argument is not properly sanitized before being used in database queries. This allows attackers to manipulate SQL queries by injecting malicious code through the Title parameter, potentially compromising the underlying database.

Critical Impact

Remote attackers with administrative privileges can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion of sensitive information stored in the application's database.

Affected Products

• code-projects Intern Membership Management System 1.0

Discovery Timeline

• 2026-01-08 - CVE-2026-0729 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2026-0729

Vulnerability Analysis

This SQL Injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affects the add_activity.php file within the administrative section of the Intern Membership Management System. The vulnerability is remotely exploitable over the network, though it requires administrative privileges to access the affected endpoint.

The flaw occurs because user-supplied input through the Title argument is directly incorporated into SQL queries without proper sanitization or parameterized query implementation. This allows an attacker to break out of the intended SQL query structure and inject arbitrary SQL commands.

A public exploit for this vulnerability has been made available, increasing the risk of active exploitation. Additional technical details can be found in the GitHub SQL Injection Exploit documentation.

Root Cause

The root cause of this vulnerability is the lack of input validation and sanitization for the Title parameter in add_activity.php. The application fails to implement prepared statements or parameterized queries, instead directly concatenating user input into SQL query strings. This classic SQL injection pattern allows attackers to inject SQL metacharacters and commands that alter the intended query logic.

Attack Vector

The attack vector is network-based, targeting the /intern/admin/add_activity.php endpoint. An authenticated attacker with administrative access can manipulate the Title parameter to inject malicious SQL statements. The injection point allows for various SQL injection techniques including UNION-based, error-based, or blind SQL injection attacks depending on the database configuration and error handling.

The vulnerability allows attackers to craft HTTP requests containing SQL injection payloads in the Title parameter. When processed by the vulnerable endpoint, these payloads can extract data, modify records, or execute administrative database operations. For detailed exploitation information, refer to the VulDB Vulnerability Details #340126.

Detection Methods for CVE-2026-0729

Indicators of Compromise

• Unusual SQL error messages in application or web server logs containing references to add_activity.php
• HTTP requests to /intern/admin/add_activity.php containing SQL metacharacters (single quotes, UNION, SELECT, etc.) in the Title parameter
• Anomalous database query patterns or unexpected database access from the web application
• Evidence of data exfiltration or unauthorized database modifications

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in requests to /intern/admin/add_activity.php
• Monitor application logs for SQL syntax errors or database exception messages
• Deploy database activity monitoring to identify unusual query patterns or unauthorized data access
• Configure intrusion detection systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Enable detailed logging for the /intern/admin/ directory and monitor for suspicious parameter values
• Set up alerts for database queries containing UNION, SELECT, or other SQL keywords from user input fields
• Monitor for repeated failed requests or error responses from the add_activity.php endpoint
• Review access logs for administrative endpoints to identify potential exploitation attempts

How to Mitigate CVE-2026-0729

Immediate Actions Required

• Restrict access to the administrative interface (/intern/admin/) to trusted IP addresses only
• Implement input validation for the Title parameter, rejecting requests containing SQL metacharacters
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Consider temporarily disabling the add_activity.php functionality until a patch is available

Patch Information

No official vendor patch has been identified for this vulnerability at the time of publication. Organizations using the Intern Membership Management System should contact Code Projects for remediation guidance or consider implementing the workarounds below. Additional vulnerability analysis is available at VulDB CVE Analysis #340126.

Workarounds

• Implement prepared statements and parameterized queries in the add_activity.php file to prevent SQL injection
• Apply strict input validation using allowlists for acceptable characters in the Title field
• Deploy network-level access controls to limit administrative interface access to trusted networks
• Consider replacing the vulnerable application with a more secure alternative if vendor support is unavailable

# Example Apache .htaccess configuration to restrict admin access
<Directory "/var/www/html/intern/admin/">
    # Restrict access to specific IP addresses
    Require ip 192.168.1.0/24
    Require ip 10.0.0.0/8
    
    # Deny all other access
    Require all denied
</Directory>